Line welding



Oct. 5 1926.

H. W. TOBEY LINE WELDING Original Filed August 27, 1923 2 Sheets-Sheet l H. W TOEEY MNE wELmNG da. 5 1926. lomzg Original Fiied August 27, 1923 2 Sheets-Sme?. :1

' of one of the eeetrocl Patented Oct. 5, 1926.

UNITED STATES@ 4MCEd HARRY W. .'JIOBEY,

TREC GCM ASSE??? QTENEJL ELEC# My invention eaw shines wherein means dwing relative Irmver" and the eeotrodes 1311" 'ent rarsmi'tm; We and has o of .mesme work to i v to zfol'nfg the move secure welding in a In the lesstnnce l parts, dfieuty is' son@ due to the tendency me Y to creep in o direction transvese to t Eine of fne www. Creeping of the work may be produced in different Wave' as 'by swinging" 1g of meta?. me encountered *f he need :in of the fm of the o'rk Without sub; K ua :eeiirodes to undue sham. dence wh my 1nl IOF I? ruler adjustment of 'in Meh'odee, or of the to engage the wor f .u dosing 'relativo mo eleetirofee and WO11 y This application le e dson of my ap- Ncaton for-Lettere Patent; of? the 'nec States, Serial No. fi' 462 wfeh was filed August 27, 1923, and is to 'ii-he same assignee as the p'rcse'lf; appce'on.

M); invention will be be';terunderstoo from the following description When con- Sidered in connection with e accompanymg dra-Wing and 'ite seo'ge wl' be pointed mit 'in the appended ClaimsJ Referring to the 'T e y show on arralngemf .b upfsng means whereby the tende/.eey of im ook to creep may be corrected; o, we en auto matic means for coerenti ed by en one of the m' anged wsse of pro mv-.feen the l and 2 of exemple, 51nd,'

Divided am? 21? .Shows e moe @flown by Fig. 2, vementr Weid- 1! ring mm e fue other en@ the member l0.

mg mounted ez;

embel 'is aise Uzef to suppe L ember A gear 1i mounted on the the Sheff; 8 may be driven throne?" l2 in any sui@ fiole manner to pw me votation of the de@ houle 3 andthe oete by Fig. 2, 'me mounied on en erm pivoted to the 1 "j 5 other end is pro 'nhee i5 foi' f sk T, As n de 4 may be which hnge or one end and the e Spying and nl; x, sutabe pren eure nemecn the ei 3 and i in order to eo o ne of the weld imei prevent amapage file 'orig a Contada 4 16 Winch ooo'pem f l he oonuc ls exis mf-lf" e506. by means @if re erm mi hand-Whe@ f-u enc? of the 'to creep muy n over: l ehehe uneuzu' adjustment el the The .e n 3 shows meme" Veni/ing weeping; of bomen; of the im@ Jche eleoirode 4 is affzmfed to Le a A angulrjym The anemia? position of ifs eectroe is controed by the ,motor driving the Worm Wheel 28" through, 1. wenn. 27". The operation of the o? is ootrolle by e,

ed January commet 34 to cause' trodes,

`the work to creep endwise.

comprising are connected to the reversely wound motor field windings and 36. The motor 29 may be su plied from any suitable source indicated or simplicity as a battery 37.

Fi 3 shows the electrode 3 and roll 16 as driven by gears 38 and 39 respectively engaged by gears 40 and 41 mounted onha shaft 42, which may be driven by any suitable power operated means.

The operation of vthe arrangement shown in Fig. 3 will be obvious from what has been heretofore set forth. When the work is in the proper position with respect to the electhe contact 30 will lie in between the contacts 33 and 34 and the motor 29 will stand still. It the work tends to move endwise one way or the other, the motor 29 will be energized and operated in the proper di- .rection to adjust the angular position of the electrode .4 so as to correct the tendency of It is apparent 'that the roller 31 may be arranged to engage either end of the drum or may be arranged to engage a guiding flange which may be clamped in any desired position to the drum. Where a separate flange is lclamped on in the manner indicated, it is apparent that the yline 'of the weld will be governed by the contour of the. flange which may be predetermined to give any desired line of weld. rThe application oi the invention is not limited to circumferential welding since the same arrangement may be applied to the welding 'ot'tlat work in which case the shoe or rolijer 31 will engage either the edge of one of the sheets to be welded or a guiding flange suitably clamped to one of the sheets.

In certain cases the production of a` spiral weld may be desirable. Fig. 4 illustrates how the automatic arrangement of Fig.. 3 may be arranged so as to produce a spiral weld of any desired pitch. In Fig. 4 'the work-is indicated as comprising two drums or shells 43 and 44 which are to be welded together by a-spiral weld. 45 and 46 indicate either a pair of electrodes or a pair of guiding rolls. The contact-making device the contacts 30, 33 and 34 and the shoe or roll 31 is -in this case shown as comprising a member 47 arranged to be moved longitudinally by means of a screw 48 driven by means of adjustable speed gearing from thel shaft 49 upon' which the roll 45 is mounted. The adjustable speed gearing shown comprises a cone pulley 50 on the shaft 49 and a cone pulley 51 driving the shaft 48 and a belt 52, the position of which along the pulleys may be adjusted by any suitable means 53. g

The operation of the arrangement shown in Fig. 4 would-be the same as the operation of the arrangement shown in Fig. 3 if the screw 48 did not turn. Since, however, this screw is driven from-the shaft 41 it follows 'adjustable by 4 that the device 47 carrying the contactrshoe or roller 31 moves longitudinally over the surface of the drum. This causes the vmotor controlled by the contacts 3U, 33 and-34 to adjust the angular position oi the roll controlling'cieeping so as to cause the work to move endwise thus producing a spiral lino of weld. The pitch of the spiral is dependent upon the speed relationship between the shafts 48 and 4S) and by adjusting the belt 52 along the faces oi the eone'pullcys :'10 and 51 this speed relationship may be adjusted to rive the desired pitch.

Fig. 5 sziiows a modification oi' my invention in which the two endsI 54- and 55 are arranged to be simultaneously welded into the drum 5G. The iside electrodes 5T and 58 are indicated as driven by the gears 5f) and (if) driven by the gears (i1 and (32 mounted on the shaft (i3 which is driven by suitable power operated means. The outside electrodes are shown at (34 and (S5 and the angular position oi thc electrode G5 is shown :is means of the worm (iii and worm wheel (i7 which may be controlled as in the arrangement of Figs. 3 or 4. A transformer G8 is indicated i'or supplying current to the electrodes (34 and 5T and a transformer (il) is indicatedfor supplying cri 'rent to the electrodes and 58. Suitab/l insulation will in all cases be provided for confining the current to the desired path in a manner well known in the art. i

It will be obvious to those skilled in the art that many modifications and variations of the arrangements shown are possible and in the appended claims I intend to cover all such modiiications as fall within the true spirit of my invention.

W'hat I claim as new and desire to secure by Letters Patent of the United States, is

1. A welding machine comprising a pair of electrodes adapted to engage opposite sides of the work and conduct welding cur'- rent therethrough, means for producing relative motion between the electrodes and work to produce a line weld, means for controlling the line ot the weld comprising a. pair of disks arranged to roll in contact with opposite sides ot' the work and means whereby the axis of rotation of one of said disks may be adjusted to impart relative movement between the electrodes and the work in a line transverse tothe line of the weld.

2. In a welding' machine as yclaimed in claim 1, the combination of means arranged to be controlled by movement of the Work vwith respect to the electrodes for automatically adjusting the axis of the disk controlling the line of the weld.

t 3. A welding machine of the ty e wherein a pair of rotatable disk elcctrodlfis are arranged to engage with opposite sides of the work and conduct welding'current therethrough and vwherein means are provided for producing relative movement between the electrodes and work to produce a linel weld, characterized by the fact that means areprovided for automatically controlling the line of the weld comprising means arranged to engage an edge of the work and meansl controlled thereby for imparting relative movement between the electrodes and work in a line transverse to the line of the weld.

4. In 'a welding machine wmprising a A paii` of rotatable disk electrodes arranged to engage opposite sidesyof the work and conduet welding current therethrough, the combination of means for driving one 'of said electrodes to produce relative movement between Ithe work and the electrodes to produce a line weld, means for angularly adjustingthe axis of rotation of one f said electrodes to impart relative movement between the electrodes and work in a line traneverse to the line of the weld, and means for automatically controlling the angular adjustment comprising a device engaging the work and arranged to vary the adjustment in accordance with relative movement between said vdevice and the work in a direction transverse to the line of the. weld.

5. In -a weldin machine asv claimed 1n c1aim`4, the comblnatio'n of means whereby the position of the work len aging device may be adjusted to control t e line of "the weld. v

, 6. A welding machine for producing circumferential welds in curved work comprising a pair of rotatable disk electrodes for engaging opposite sides of the work and conducting means for rotating one of the-electrodes to produce relative 4movement between the work and electrodes to e'ect a line weld, means whereby the axis of rotation of one of the electrodes may beangularl adjusted, a device controlled by the work or controlling the an ularv adjustment and .means for ad j listing t e position of said device in aecordance with the rotation of the electrodes to produce a s )irai weld.

7. In a wel ing machine a rotatable disk electrode arranged to engage the work and current therethrough,

conductV Ywelding means for producing relative motion tween saidelectrode and the work to produce 'a line weld, and means for angularly adjusting the axis of rotation of said electrode' while welding to control the line of the QWeId. 1n witness whereof, I have hereunto set my hand this 31st day of December, 1924.

HARRY W. Toner.

welding current therethrough, 

